Maybe.
How big is your coop, in feet by feet?
Dimensions and pics would help here.
Can you fit a large crate in there or split the coop with a wire wall?
Here's some tips about....
Integration Basics:
It's all about territory and resources(space/food/water).
Existing birds will almost always attack new ones to defend their resources.
Understanding chicken behaviors is essential to integrating new birds into your flock.
Confine new birds within...